This kind of shit is for upper class women who don't perform the vital lower class jobs that make society actually work, so when they take the day off to overpay for weak mix drinks no one notices. If women had a unified reason beyond "because women" to strike for a day then the effect of a "day without women" would be more dramatic/actually noticeable but as is, with no specific issue driving it, there's just no good reason to be one of a handful of women to take a day off work and lose out on pay/be penalized for calling out.